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Continuity of progress

Penicillin and historic syphilis trends

Penicillin did not precipitate a discontinuity of more than ten years in deaths from syphilis in the US. Nor were there other discontinuities in that trend between 1916 and 2015. The number of syphilis cases

No Picture
Continuity of progress

Historic trends in chess AI

The Elo rating of the best chess program measured by the Swedish Chess Computer Association did not contain any greater than 10-year discontinuities between 1984 and 2018. A four year discontinuity in 2008 was notable

No Picture
Continuity of progress

Historic trends in flight airspeed records

Flight airspeed records between 1903 and 1976 contained one greater than 10-year discontinuity: a 19-year discontinuity corresponding to the Fairey Delta 2 flight in 1956. The average annual growth in flight airspeed markedly increased with